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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 407 (Engine Controls - Theory & Operation - 3.8L) >> Computerized Engine Controls >> Input Devices >> Ignition/Crank Signal

Ignition/Crank Signal

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The PCM monitors initial cranking (RPM) signal to determine when the engine is being started. This information is used for starting enrichment. If this signal is intermittent or not available, hard starting or a no-start condition will result.

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